# Switching and Frequency Response Assessment of Photovoltaic Drivers and Their Potential for Different Applications

## TL;DR

This paper evaluates photovoltaic drivers for switching and signal processing, showing they are low-cost and suitable for specific high-voltage and low-speed applications.

## Contribution

The study provides a novel characterization of photovoltaic drivers under various loads and power switches.

## Key findings

- Photovoltaic drivers perform well in high-voltage, low-bandwidth applications.
- They simplify JFET driving by eliminating the need for a negative power source.
- Switching losses vary with power switch type and configuration.

## Abstract

Newly introduced Photovoltaic (PV) devices, featuring a built-in chip with an illuminating Light Emitting Diode (LED), have emerged in the commercial market. These devices are touted for their utility as both low- and high-side power switch drivers and for data acquisition coupling. However, comprehensive knowledge and experimentation regarding the limitations of these Photovoltaic Drivers in both switching and signal processing applications remain underexplored. This paper presents a detailed characterization of a Photovoltaic Driver, focusing on its performance under resistive and capacitive loads. Additionally, it delineates the device’s constraints when employed in signal processing. Through the analysis of switching losses across various power switches (Silicon and Silicon Carbide) in both series and parallel driver configurations, this study assesses the driver’s efficacy in operating Junction Field-Effect Transistors (JFETs). Findings suggest that Photovoltaic Drivers offer a low-cost, compact solution for specific applications, such as high-voltage, low-bandwidth measurements, and low-speed turn-on with fast turn-off power switching scenarios, including solid-state switches and hot-swap circuits. Moreover, they present a straightforward, cost-effective method for driving JFETs, simplifying the circuit design and eliminating the need for an additional negative power source.